add daemon osd.X perf dump metrics about ceph_exporter HOT 8 CLOSED

Those metrics are gathered from local daemons running on each node whereas ceph_exporter is designed to work only with the monitors at the moment.

I suppose an easier way to do what you want is to make a small json parser to call from cron and just dump the output to a text file to be served by a node_exporter instead using the textfile capability.

A similar issue is extracting metrics from the rados gateway which also uses a separate API.

from ceph_exporter.

Yeah, that is definitely possible. I still think that having a separate executable or a different execution mode for the ceph_exporter to make it run on every osd node would be useful, because by default it provides only basic information, so it's somehow incomplete. Is it something to be considered for the future, or out of scope?

from ceph_exporter.

Different execution mode is something we can surely add. Currently in our setup, we have a different binary that extracts stats from perf dump. I am also planning to keep tabs on prometheus module of ceph-mgr as this work might be moot if the ability to extract OSD-level perf stats can be added to ceph-mgr.

from ceph_exporter.

@neurodrone I'm also looking at ceph-mgr, but first we have to upgrade to Luminous 😄. Alright, I'll keep this issue open then, because it seems to make some sense.

from ceph_exporter.

Is there any result?

from ceph_exporter.

As far as I can tell, there's still no way to access these metrics from ceph-mgr. Closing this issue since it doesn't look like it's going to be available any time soon.

from ceph_exporter.

You can get these metrics on ceph masters by running ceph tell osd.\* perf dump, but not sure if that's a good solution.

from ceph_exporter.

@madushan1000, yes, it turns out that as of Ceph Octopus these are available via ceph tell. If this issue is still valuable to someone, they should feel free to re-open it for eventual investigation into feasibility for Octopus+ support.

from ceph_exporter.